Grooved and recessed ball-bearing.



M. MOSSIG.

GROOVED AND RECESSED BALI. BEARING.

MFLICATION FILED we. I916.

1,301,295. Patented Apr. 22,1919.

2 SHEETS-SHEET I.

Witnesses Inventor M. MO-SSIG. GROOVED AND secessfn BALL BEARING.

APPLICATION HLED 16.24. Hilfi- Patented Apr. 22, 1919.

2 SHEETS-SHEET 2 Fig. 7.

Fig. 10.

Witnesses Inventor PATENT OFFICE.

MAX MOSSIG, 0F BERLIN, GERMANY.

G B,OOVED AND RECESSED BALL-BEARIN G.

Specification of Letters Patent.

Patented Apr. 22, 1919.

Application .flled August 24, 1916. Serial No. 116,741.

To all whom it may concern Be it known that 1, MAX MOSSIG, of No. ,98Gneisenaustrasse, Berlin, in Germany, have invented certain new anduseful Improvements in Grooved and Recessed Ball- Bearings, of which thefollowing is a specification.

This invention relates to ball-bearings having grooved race-ways andlateral notches suitable for the insertion of the balls into the saidrace-grooves, which arrangement is especially applicable to the annulartype of'ball-bearings in which the ring elements are sufficientlyresilient to allow the slipping in of the balls through said lateralrecesses, the balls being forced therebetween one by one, as known inthe art.

The object ofthe invention is to provide a ball-bearing with cooperatingnotches in both rings which will enable the easy insertion of the ballsand then surely retain them, while facilitating the manufacture of theconstruction. This object is attained by the use of notches, which, whenplaced oppositely, constitute a nearly circular filling opening levelwith the race of one ring and located at a certain radial distance fromthe,bottom of the other ring. Another feature of the device resides inthe fact that the filling notch in one ring extends over the bottom ofthe race-groove, on both sides thereof, so that the enlargement formedat the intersection of the grooves will permit of the smooth passage ofthe balls in the operation of the aring.

In the drawing, which forms a part of this specification, severalconstructional embodiments of the invention have been illustrated forpurpose of examples.

Fi ure 1 is a side elevation of an annular ballearing having a fillingaperture constructed in accordance with the invention, and

Fig. 2 is a sectional view of said bearing on the line 22 of Fig. 1.

Fig. 3 represents a cross-section of the outer rin Fig. 4 IS the view ofthe circumference of the inner bearing-element.

Fig. 5 is a partial cross-section of the bearing on a larger scale.

Fig. 6 is a side view of a ball-bearing showing a modification of thefilling opening, and

Fig. is a cross-section on the line 8- 8 of F igs, '6 and 9,

Fig. 8 is a cross-section of the outer bearing-ring, while Fig. 9represents the circumference of the inner I'lIl Fig. 1 illustrates theupper part of Fig.

on a larger scale.

Like numerals denote like parts throughout all figures of the (drawing.

Referring to the construction illustrated in Figs. 1 to .5, the bearingconsists of the outer and inner rings 21 and 22, respectively, and theballs 20 confined and working there- 'between in the grooves 21. and 22of the usual construction, the lateral shoulders of both ringsoverhanging the series of balls and retaining the elements in theassembled position. Beginning from the side of the rings 21 and 22, theshoulders are provided with notches or recesses 23 and 24, respectively,which in the position shown in Figs. 1 and 2, together form a passageconvenient for the insertion of the balls, whereby the balls must beforced through, since the radial width of said passage is smaller thanthe diameter of the balls (see Figs. 1, 2 and 5).

The recess 23 cut into the outer ring 21 presents the same depth as thepertinent racegroove; it leads from one side of the ring across theshoulder into the groove 21' and is continued from the bottom thereofthrough the other shoulder totally (as shown in Figs. 2 and 3). Thedepth of the recess 24 of the inner ring 22 is smaller than that of thecorresponding race-groove 22, so that its inner end terminates at acertain distance above the bottom of the said groove. The elevation ofthe recess 24 can be considerable, the resiliency of both rin beingavailable for the introduction of t e balls. The unbroken part of theshoulder inside the recess 24 will not only revent the balls fromescaping but also guide them upon the middle race throughout thecircumference of the bearing. The angular relation of said recess 24 tothe groove 22' may be varied; it may be vertical (Fig. 8) or more orless inclined thereto (Fig. 4), or helical, as known in the art.

In the modification of the construction illustrated in Figs. 6 to 10 thetwo recesses 23 and 24 are interchanged in their p0sition with respectto the rings 21* and 22, viz., a recess 23 cut to the bottom of thegroove 22" and extending into both shoulders is provided on the innerring 22, while the recess 24: (Fig. 8), or shallower than the groove 21is located upon the outer bearing-ring 21". From Fig. 9 it may easily beunderstood that the recess 23 can be given various shapes andinclinations with respect to the race, and its tWo branches may besymmetrical (Fig. 9) or not. Instead of straight, the recess 23 can becurved, f. ex., in the shape of an arc of a circle crossing the race. Arecess leading in obliquely, presents some advantages with a certaindirection of rotation of the hearing as it tends to move the balls tothe middle of the race.

It may be opportune, to state in connection with the foregoingdescription that recesses located above the bottom of the racegroove areknown, as well as recesses cut into both shoulders of a ring andintersecting the grooves; therefore the invention does not reside inthose details. From the combination and special arrangement of thedifferent recesses upon the rings, however, advantages are obtained inthe manufacture and operation of ba1lbearings; especially the grindingof the recesses will be facilitated therewlth.

Copies 0! this patent may be obtained or five cents each, by addressingthe Commissioner What I claim as my invention and desire to secure byLetters Patent is An annular ball bearing consisting of two concentricresilient rings having in their confronting surfaces opposed ball-racegrooves and side entrance slots or recesses for inserting balls betweenthe rin s by springing them apart, and a series 0 balls between therings running in said grooves, the recess in one ring extending throughboth annular shoulders on opposite sides of the balls; one of saidrecesses being oblique to the axis of the ring and the othersubstantially parallel with said axis, and the recess extending throughthe annular shoulders in one ring having a depth equal to that of theball-race While the recess in the other ring is of less depth than theball-race sub- 'stantially as and for the pursiose set iorth.

In testimony whereof I a 2: my signature in presence of two witnesses.

MAX MOSSIG.

Witnesses HENRY HAsrER, ALLEN F. JENNINGS.

of Patents,

Washington, .D. O."

